igneous, sedimentary, and metamorphic
Mixed Rock and Mineral Collection
Various geological specimens
Varies by specimen. Hardness ranges from 3 to 7 on the Mohs scale depending on the specific mineral or rock. Colors include white, green, red, brown, and grey. Luster ranges from vitreous to dull.
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Physical properties
Varies by specimen. Hardness ranges from 3 to 7 on the Mohs scale depending on the specific mineral or rock. Colors include white, green, red, brown, and grey. Luster ranges from vitreous to dull.
Formation & geological history
Formed through various geological processes including magmatic crystallization, sedimentation, and metamorphism over millions of years.
Uses & applications
Educational purposes, rock hounding collections, and ornamental displays.
Geological facts
This collection represents a variety of geological formations typically found together in alluvial deposits, riverbeds, or glacial tills.
Field identification & locations
Great for beginner rock hounds to practice identification skills using streak tests, hardness testing, and visual classification.
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Other igneous, sedimentary, and metamorphic specimens
River Pebbles and Quartz
Mixed Igneous, Sedimentary, and Metamorphic Rocks (Silicon Dioxide SiO2 dominant)
mixed
Agate
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sedimentary
Zoisite with Rubellite (Ruby in Zoisite)
Zoisite with inclusions of Hornblende (Anyolite)
metamorphic
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
mineral
Gravel / Small Pebble
Rock Fragment (Gravel)
sedimentary
Agate
Chalcedony (SiO2)
sedimentary